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Genealogist Walter BLUMER
- "Blumer, Walter Kartograph, Topograph"
- "BLUMER, Walter, Ingenieur"
- "BLUMER, Walter, Genealogist"
- "Genealogist Walter BLUMER"
- "Walter Blumer"@nl-NL
- "Kartograph, Topograph Walter Blumer"
- "Ingenieur Walter BLUMER"